I have 3 Roosevelt Dimes from 1964 and all 3 have odd (offset?) 4s. Is this a common find? Appreciate any hep here.
Aren't they all like that? Looking at PCGS images I can't detect a difference between them and the one @ldhair posted. Wexler says "Starting with the Lincoln cents in 1909, the last two digits of the date were engraved into the master die for each year." So unless there was more than one master die in 1964 I'm not sure what we think is going on here. All the working dies would have the same date appearance.
Can’t tell anything from that photo. Please post each coin separately and from directly above. You said you had 3 1964 dimes but one of them in that photo is a 1953.